“Bullshit is unavoidable whenever circumstance require someone to talk without knowing what he is talking about.”
Source: On Bullshit
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Harry G. Frankfurt 4
Philosopher 1929Related quotes

Niebla [Mist] (1914)
Context: Whenever a man talks he lies, and so far as he talks to himself — that is to say, so far as he thinks, knowing that he thinks — he lies to himself. The only truth in human life is that which is physiological. Speech — this thing that they call a social product — was made for lying.

“Don't bother. Bram doesn't know what he's talking about.”
Linus vs. Bram Cohen, 2005-04-27, Torvalds, Linus, 2013-10-03 http://www.gelato.unsw.edu.au/archives/git/0504/2197.html,
2000s, 2005
Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)